On 20.11.2019 18:38, Angus Ainslie wrote: > On 2019-11-20 08:30, Leonard Crestez wrote: >> On 20.11.2019 17:41, Angus Ainslie wrote: >>> Hi Leonard, >>> >>> On 2019-11-20 07:04, Leonard Crestez wrote: >>>> On 20.11.2019 16:08, Angus Ainslie wrote: >>>> Is "mainline ATF" an important criteria for Purism? >>> >>> Yes we intend to bring all of our patches to mainline and were hoping >>> that NXP would be doing the same. Shouldn't a mainline kernel run on a >>> mainline ATF ? >> >> You can still use mainline ATF (tested right now) but the imx8m-ddrc >> driver won't probe. > > Sorry I was talking about the DDR frequency scaling specifically. > >> The ability to mix and match different branches of firmware and kernel >> is very useful for testing. There might be slight incompatibilities but >> in theory if a feature depends on both firmware and kernel support then >> it should gracefully degrade rather than crash or hang. > > I saw the check you put in for the correct ATF version and that's very > helpful thanks. > >> ATF support for this feature will be mainlined eventually, I picked the >> linux side first because review is more challenging and changes are >> much larger relative to what we have in our internal tree. > > Do you have a patch against mainline ATF that we can test this feature > with ? Not right now, and imx atf is based on a slightly older version so some porting effort might be required. -- Regards, Leonard
